Các câu hỏi tương tự
Tính bằng cách thuận tiện nhất .
\(\frac{39}{16}:\frac{5}{8}-\frac{17}{16}:\frac{5}{18}+\frac{4}{5}\)
\(\frac{16}{17}x\frac{12}{19}+\frac{16}{17}x\frac{7}{19}-\frac{2}{3}\)
tim d biet :
d : \(\frac{8}{9}\)= \(\frac{8}{10}\)
d =
so sanh 2 phan so sau :
\(\frac{3}{7}\) \(\frac{5}{6}\)
tinh :
\(\frac{1}{5}\): 2 =
Đúng ghi Đ, sai ghi S vào chỗ chấm:a) frac{3}{7}+frac{1}{3}xfrac{3}{7}frac{16}{21}xfrac{3}{7}frac{16}{49} ......b)frac{5}{9}+frac{1}{5}xfrac{5}{6}frac{5}{9}xfrac{1}{6}frac{13}{18} ......c)frac{13}{9}-frac{7}{9}:frac{2}{3}frac{6}{9}:frac{3}{2}1 ......d)frac{11}{8}-frac{5}{8}:frac{3}{4}frac{11}{8}-frac{5}{8}xfrac{4}{3}frac{11}{8}-frac{10}{24}frac{23}{24} ......
Đọc tiếp
Đúng ghi Đ, sai ghi S vào chỗ chấm:
a) \(\frac{3}{7}+\frac{1}{3}x\frac{3}{7}=\frac{16}{21}x\frac{3}{7}=\frac{16}{49}\) ......
b)\(\frac{5}{9}+\frac{1}{5}x\frac{5}{6}=\frac{5}{9}x\frac{1}{6}=\frac{13}{18}\) ......
c)\(\frac{13}{9}-\frac{7}{9}:\frac{2}{3}=\frac{6}{9}:\frac{3}{2}=1\) ......
d)\(\frac{11}{8}-\frac{5}{8}:\frac{3}{4}=\frac{11}{8}-\frac{5}{8}x\frac{4}{3}=\frac{11}{8}-\frac{10}{24}=\frac{23}{24}\) ......
Tính nhanh: 1,
\(\frac{423134x846267-423133}{846267x423133+423134}\)
2, 1919 x 18 - 1818 x 19
3, \(\frac{272727x28-282828x27}{1+2+3+.......+2014}\)
4, \(\frac{2929-101}{2x1919+404}\)
5, \(\frac{2}{7}-\frac{3}{8}+\frac{11}{7}+\frac{1}{3}+\frac{1}{7}-\frac{5}{8}\)
bài 1 : tính phân số:a) frac{5}{7}+frac{4}{9}?;frac{4}{5}-frac{2}{3}?;frac{9}{11}+frac{3}{8}?;frac{16}{25}-frac{2}{5}??b)5+frac{3}{5}?;10-frac{9}{16}?;frac{2}{3}-left(frac{1}{6}+frac{1}{8}right)?c)frac{5}{7}+frac{7}{6}?;frac{7}{12}+frac{17}{18}?;frac{9}{8}+frac{15}{32}?;4+frac{35}{45}?d)frac{11}{4}-frac{15}{16}?;frac{5}{6}-frac{5}{8}?;frac{196}{64}-2?;3-frac{13}{9}?e)frac{8}{5}+frac{7}{6}+frac{5}{9}-2?;3-frac{5}{6}-frac{4}{9}+frac{32}{24}?
Đọc tiếp
bài 1 : tính phân số:
a) \(\frac{5}{7}+\frac{4}{9}=?;\frac{4}{5}-\frac{2}{3}=?;\frac{9}{11}+\frac{3}{8}=?;\frac{16}{25}-\frac{2}{5}=?\)=?
b)\(5+\frac{3}{5}=?;10-\frac{9}{16}=?;\frac{2}{3}-\left(\frac{1}{6}+\frac{1}{8}\right)=?\)
c)\(\frac{5}{7}+\frac{7}{6}=?;\frac{7}{12}+\frac{17}{18}=?;\frac{9}{8}+\frac{15}{32}=?;4+\frac{35}{45}=?\)
d)\(\frac{11}{4}-\frac{15}{16}=?;\frac{5}{6}-\frac{5}{8}=?;\frac{196}{64}-2=?;3-\frac{13}{9}=?\)
e)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)
Phan so thu nhat \(\frac{4}{5}\) phan so thu hai la \(\frac{2}{7}\). Hay tinh tong, hieu,tich, thuong cua phan so thu nhat va phan so thu hai.
Tính nhanh:
\(\frac{3}{7}+\frac{4}{9}+\frac{8}{14}+\frac{10}{18}\)
tính nhanha) frac{3}{11}x frac{7}{25}+ frac{15}{11}x frac{1}{5}b) frac{3}{7}x frac{25}{19}+ frac{1}{7}x frac{18}{19}c) frac{6}{7}x frac{3}{8}+ frac{6}{7}: frac{8}{5}+ frac{6}{7}giải giúp e với e cảm ơn ạ
Đọc tiếp
tính nhanh
a) \(\frac{3}{11}\)x \(\frac{7}{25}\)+ \(\frac{15}{11}\)x \(\frac{1}{5}\)
b) \(\frac{3}{7}\)x \(\frac{25}{19}\)+ \(\frac{1}{7}\)x \(\frac{18}{19}\)
c) \(\frac{6}{7}\)x \(\frac{3}{8}\)+ \(\frac{6}{7}\): \(\frac{8}{5}\)+ \(\frac{6}{7}\)
giải giúp e với e cảm ơn ạ
Tính những phép tính sau bằng cách dễ hiểu nhất:
\(\frac{16}{3}\)\(:\frac{8}{3}\)
\(\frac{63}{35}:\frac{21}{5}\)
\(\frac{8}{14}\times\frac{7}{8}\)
\(\frac{19}{14}\times\frac{7}{15}\)